Device for feeding diamond and other rotary rock-drills



(No Model.) 4 Y A. BALL 8u G. I'. CASE. DEVICE POR PEEDING DIAMOND AND THER ROTARY ROOK DRILLS.

Patented 0ot.4,1881.

Zuf-

N. PETERS. PlmhrLnlwgmplwr. wumnglm n. c.

' the following is a full and exact description of vUNITED STATES PATENT OFFICE ALBERT BALL AND GEORGE F. CASE, OF CLAREMONT, NEW HAMPSHIRE.'

YDEVICE FOR FEEDING DIAMOND AND OTHER ROTARY ROCK-DRILLS.

SPECIFICATION forming part of Letters Patent No. 247,872, dated October 4, 1881. i'

Application filed August 8, 1881. (No model.) l

To all whom -it may concern:

Be it known that we, ALBERT BALL and GEORGE F. CASE, both of Claremont, in. the county of Sullivan and State ot' New Hampshire, have invented a new and Improved De- 'vice for Feeding Diamond or other Rotary Rock-Drills; and we do hereby declare that the same, reference being had to the accompanying drawing, and to the .letters of reference marked thereon.

Our invention relates to an improvementin vthe method of feeding diamond or other rotary drills, and it consists, essentially and principally, in the use of a direct-acting single-cylinder, in combination with a revolving feedrod carrying the drill-rod arranged inside of such cylinder, and having secured to such feedl rod in the cylindera piston, whereby the rods 2o are moved forward or back when pressureis applied thereon; and it further consists in the combinationvof suoli parts with a reversing-` valve arranged on the side of the cylinder,`oi1t let and inlet governing valves, and conducting-pipes; and, further, in the method of feeding direct from a boiler to the cylinder; and, lastly, in the arrangement of mechanism with such parts for operating the drill, all as more fully hereinafter described.

In order that those skilled in the art may know howto make and use our invention, we will proceed to describe the same, reference bein g had to the accompanying drawing, which is a part longitudinal section, showing clearly our improvements therein.

Like letters denote corresponding parts in the drawing. f

A represents the frame end, held by a clamp at a in the usual manner for this class of drills. Upon the projecting portionof this frame is bolted the cylinder B, provided at each end with a stuffing-box, b, constructed and arranged in the ordinary manner.

C is the revolving feed-rod, passing longitudinally through" the cylinder and stuffingboxes b at each end of the cylinder, and eX- tending .outwardly for some distance beyond each end. rlhis revolving feedrod carries the hollow drill-rod D, which is secured to it by the clutch c and, its screw c', near the lower end, whichv clutch also enables the drill-rod to be lowered when a greater depth is required to be reached. This feed-rod C is revolved `by a spline on'the bevel-pinion E, `which meshes with the bevel driving-gear E. provided with a longitudinal slot, d, in which the spline of thc pinion slides when the, rod advances. The guide c serves t0 steady the lower end of the. feed-rod, and also serves asa bearing for the bevel-pinion E.

In the cylinder, and to the feed-rod C, is secured a piston, F, with which rod it revolves.

Itis of the ordinaryconstruction, and may be filled with suitable w'ood, hard rubber, celluloid, or other material that will not be affected by the liquid in the cylinder, nor itself wear the cylinder, nor be worn hyit. This piston performs the operation of advancing and withdrawing the rods when pressure is exerted Ithereon. y

On the side of the cylinder B, and east with it, is a small cylinder, B', in which operates a reversing-rod, G, provided at its Aupper and near its lower end with ya valve,f. When this rod is raised.. which is by means of the small vlever gat its lower end, the valvesfso operate as to permit the liquid to pass through an opening, h, (cutin the side of the cylinder near the upper end,) into'the cylinder above the piston, thereby forcing the drill downward, the

Avelocity of feed being governed bythe amount' ot' liquid allowed to flow out through the governing-valve i at the lower end of the cylinder B.

By loweri-ng the rod G, which is eEected by the same means as raisesit, the liquid passes through an opening, h', (near the lower end of the cylinder, and which issimilar to the opening h at the upper end,) into the cylinder below the piston, thereby forcing the drill up, thespeed of which is governed bythe valve t at the upper end of the cylinder B'.-

We have 4shown in the drawing a simple method for supplying under pressure water or other liquid to the cylinder, which method enables the use ofthe same water repeatedly, as in many cases it may not be convenient to be had at-all times, and it is therefore necessary to use the same water as often as possible.

k is an inlet-pipe connectingwith the small cylinder B, and through which the water or liquid under pressure is supplied to the cylin@ This rod is IOO der B. This pressure may be obtained by pump H.

It will be seen that by this arrangement the same water is used repeatedly, as the supply to the pump is only as much as is permitted to fiow out of the governing-valves i i through ,the outletpipe k to the tank or reservoir I.

The pipes k k can be made of flexible material, to allow the placing of the drill at various angles (when so desired) without interfering with the pump.

Although we have described this method of supplying water to the cylinder, we lay no special claim to it, for any convenient one may be used; but as part ot' ourinvention we do lay claim to the method ot' supplying pressure to the piston by making a direct connection from the water-leg of a steam-boiler to the cylinder, as shown in the drawing. J represents the boiler, and mm m the valves by which the water is pumped into the boiler, and conducted therefrom, through the inlet-pipe k and valve m to the cylinder, in the manner bet'ore explained.

r1`11e pressure of the steam in the boiler is equal to the pressure of the water in the cylinder. If the cylinder be filled with water or other liquid, and pressure be applied to the upper end, the piston will travel only so fast as the water is permitted to escape from the lower end thereof. At the saine time the piston and rod are free to revolve, thus permitting a progressive rotary motion to the feed and drill` rods, without having any loose joints between the drill and feeding mechanism, the piston revolving against the pressure of water that forces it forward.

It will be evident, upon inspection, to thoseL skilledin the art to which ourinvention pertains that its facilities for performing the work for which it is intended are the very best, from the fact that its component parts are very few and simply arran ged,\vhen compared with the many such complicated devices now in use; and in consequence of its parts being few it is necessarily cheap, simple, and very light in weight. It can bore a hole at various angles and of an unlimited depth, as the drillrod, by means of the clutch and its screw, can be so adjusted to enable it to reach any depth desired.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is

1. In a rotary drill, the combination of the driving mechanism, rotary feed-rod, and piston, substantially as described, with a drillrod passing longitudinally through the entire length of such feed-rod, and made adjustable theretoby means of a clutch and screw, substantially as described, and for the purpose set forth.

2. In a rotary drill, the combination, with a directacting cylinder, rotary feed and drill rods, and piston, arranged substantially as described, ot' openings made in the side of said cylinder, near its upper and lower ends, for the inlet and outlet of water in such cylinder, and a reversing-rod provided with an upper and lower valve to regulate the flow of water through such openings, substantially as described.

3. In a roary drill, the combination, with a direct-actin g cylinder,rotary feed and drill rods, piston, openings, and reversing-rod, arranged substantially as described, of outlet-governing` valves, substantially as described, and for the purpose set forth and shown.

4. In a rotary drill, the combination of the cylinder B, openings h h', reversing-rod G, governing-valvesz'i', and pi pes klo', constructed and arranged substantially as described, willi any suitable pressure-supply, for the' purpose set forth.

5. In a rotary drill, the combination, substantially as described, ofthe cylinder B, piston F, rotary feed and drill rods C D, openings It h', reversing-rod G, governing-valves i1", pipes k lc', steam-boiler J, and valves m m m.

6. In a rotary drill, substantially as dcscribed, the combination ofthe drillrod D with the feed-rod C, and clutch'c, with its screw, substantially as described, and for the purpose set forth.

rlhis specication signed and witnessed this 16th day of May, 1881.

ALBERT BALL. G. F. CASE. Witnesses:

J. DUNCAN UPHAM, HERMoN HoLT, J AMES L. RICE. 

